GB2004443A – Voice codification system
– Google Patents
GB2004443A – Voice codification system
– Google Patents
Voice codification system
Info
Publication number
GB2004443A
GB2004443A
GB7832650A
GB7832650A
GB2004443A
GB 2004443 A
GB2004443 A
GB 2004443A
GB 7832650 A
GB7832650 A
GB 7832650A
GB 7832650 A
GB7832650 A
GB 7832650A
GB 2004443 A
GB2004443 A
GB 2004443A
Authority
GB
United Kingdom
Prior art keywords
phoneme
sections
repeated
signal
intensity
Prior art date
1977-08-09
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7832650A
Other versions
GB2004443B
(en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Center of Scientific and Applied Research Ltd
Original Assignee
Center of Scientific and Applied Research Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1977-08-09
Filing date
1978-08-08
Publication date
1979-03-28
1978-08-08
Application filed by Center of Scientific and Applied Research Ltd
filed
Critical
Center of Scientific and Applied Research Ltd
1979-03-28
Publication of GB2004443A
publication
Critical
patent/GB2004443A/en
1982-07-21
Application granted
granted
Critical
1982-07-21
Publication of GB2004443B
publication
Critical
patent/GB2004443B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G10—MUSICAL INSTRUMENTS; ACOUSTICS
G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
G10L19/0018—Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis
G—PHYSICS
G10—MUSICAL INSTRUMENTS; ACOUSTICS
G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
Abstract
In a voice coding system each vowel or consonant sound, or phoneme, is divided into repeated similar sections and the analog electrical equivalent of one of those sections is transmitted. If repetitive sections cannot be distinguished, e.g. during unvoiced consonants, a signal is derived from a section of predetermined length. The signal is transmitted in digital form together with signals indicating the number of sections in the phoneme, the intensity of the phoneme, the intensity of each of the repeated sections of the phoneme, any pre-equalisation applied to the speech, and phoneme change. On reception the analog electric equivalent signal is recovered, stored, level controlled, equalised, and repeated the appropriate number of times until a phoneme change is indicated.
GB7832650A
1977-08-09
1978-08-08
Voice codification system
Expired
GB2004443B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GR54119A
GR58359B
(en)
1977-08-09
1977-08-09
Voice codification system
Publications (2)
Publication Number
Publication Date
GB2004443A
true
GB2004443A
(en)
1979-03-28
GB2004443B
GB2004443B
(en)
1982-07-21
Family
ID=10927866
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7832650A
Expired
GB2004443B
(en)
1977-08-09
1978-08-08
Voice codification system
Country Status (4)
Country
Link
CH
(1)
CH639218A5
(en)
DE
(1)
DE2834751A1
(en)
GB
(1)
GB2004443B
(en)
GR
(1)
GR58359B
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2125259A
(en)
*
1982-08-04
1984-02-29
Secr Defence
Digital coding of speech
EP1610300A1
(en)
*
2003-03-28
2005-12-28
Kabushiki Kaisha Kenwood
Speech signal compression device, speech signal compression method, and program
Family Cites Families (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1487540C3
(en)
*
1966-12-01
1981-06-25
Heinz Dipl.-Phys. 7801 Umkirch Kusch
Process for the analysis and synthesis of electrical acoustic signals
1977
1977-08-09
GR
GR54119A
patent/GR58359B/en
unknown
1978
1978-08-08
GB
GB7832650A
patent/GB2004443B/en
not_active
Expired
1978-08-08
DE
DE19782834751
patent/DE2834751A1/en
active
Granted
1978-08-09
CH
CH844278A
patent/CH639218A5/en
not_active
IP Right Cessation
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2125259A
(en)
*
1982-08-04
1984-02-29
Secr Defence
Digital coding of speech
EP1610300A1
(en)
*
2003-03-28
2005-12-28
Kabushiki Kaisha Kenwood
Speech signal compression device, speech signal compression method, and program
EP1610300A4
(en)
*
2003-03-28
2007-02-21
Kenwood Corp
Speech signal compression device, speech signal compression method, and program
CN100570709C
(en)
*
2003-03-28
2009-12-16
株式会社建伍
Speech signal compression device, speech signal compression method and program
US7653540B2
(en)
2003-03-28
2010-01-26
Kabushiki Kaisha Kenwood
Speech signal compression device, speech signal compression method, and program
Also Published As
Publication number
Publication date
CH639218A5
(en)
1983-10-31
GR58359B
(en)
1977-10-03
DE2834751C2
(en)
1988-05-19
DE2834751A1
(en)
1979-02-22
GB2004443B
(en)
1982-07-21
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Legal Events
Date
Code
Title
Description
1987-03-25
PCNP
Patent ceased through non-payment of renewal fee
